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(No Model.)

. J. H. PALMER.

BOBBIN WINDBR FOR SEWI NGfMAGHINES Patented Feb. 17, 1885.

INVENTOR WITNESSES Jo/znLEPaZmer W3 By his ttorneys UNITED STATES PATENT OFFICE.

JOHN H. PALMER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE AMERICAN BUTTONHOLE, OVERSEAMING AND SEWING MACHINE COM- PANY, OF SAME PLACE.

BOBBlN-WINDER FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 312,501, dated February 1'7, 1885.

. Application filed March 8, IP84. (No model.)

To all whom it may concern:

Be it known that 1, JOHN H. PALMER, of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in BobbinNVinders for Sewing Machines, of which the following is a specification.

I In the accompanying drawings, Figure 1 is an end view'of the sewing-machine head or [0 frame, showing the driving-pulley part-1y in section and the adjustable bobbin winder mounted on the frame. Fig. 2 is a top view of the bobbin-winder detached, and Fig. 3 is a section showing the means for connecting and disconnecting the driving-pulley and drivingshaft of the machine.

The enlarged or balance-wheel part a of the driving-pulley A is keyed on the driving-shaft of the machine, while the grooved loose pul- 2o ley I), which is driven by the band of the ma chine, rotates loosely on a hub formed with the part a between the balance-wheel and the frame of the machine. An annular dovetailed recess, a, is formed in the face of the grooved pulley b, next the balance-wheel a. The correspondinglyshaped head of a bolt, (1, runs loosely in this annular dovetailed recess. The bolt is inserted through an aperture, e, in the pulley b, and passing through the wheel a, is

provided on its outer end with a thu'mb'nut. When the thumb-nut is loosened, the pulley b will rotate without driving the wheel (land the main shaft-of themachine, because the head of the bolt-will run loosely in the dove- 5 tailed recess in the grooved pulley. \V hen the thumb-nut is screwed up, however, the two wheels are firmly clamped together. It is always desirable to throw the machine out of action when the pulley is being rotated 0 merely for the purpose of winding the bob-.

bins.

The devices thus far described .for connecting and disconnecting the driving-pulley from ent granted to me July 1, 1884, and numbered 301,456.

, 0n the frame of the machine, at any convenient distance below the drivingpulley, a bracket, G, is secured. This bracketisformed with two cars or plates, g g, which are bolted to the frame of the machine and a horizontal laterally-projecting plate, H. This plate carries two set-screws, h i, on which the horizontally-slotted bobbin-winder frame slides. The slotted bobbin-winder frame carries on one end a grooved pulley,'adapted to engage with the driving band or cord of the machine to actuate the bobbin-winding spindle. The opposite end of the frame is preferably provided with a suitable handle for moving it back-and forth. At the end of theslotin the frame nearest the handle there is a depression into which the screwt' fits when the bobbin-frame has been I thrust sufficiently forward, the frame being thrown up against the screw by a spring, Z, on the bracket. In this position the pulley will be in engagement with the band of the machine and bobbins may be wound.

I claim as my invention- 1. The combination, substantially as set forth, ofthe frame of the machine, the bobbin-winder supporting-bracket, the slotted bobbin-winder frame, which may be adjusted back and forth on the bracket, and the supporting or guide screws or pins h i on the bracket on which the slotted frame slides.

2. The combination, substantially as set forth, of the frame of the machine. the bobbin-winder bracket, the screws h i, the slotted bobbi nwinder frame formed with an enlarged opening or socket at one end of the slot, and the spring.

In testimony whereof I have hereunto subscribed my name.

JOHN H. PALMER.

Witnesses:

W. E. STEEN, M. F. GULIcK. 

